KeyNote: Tabbed notebook and personal information manager, with tree structure and strong encryption. Open source.
Keynote is a flexible, multi-featured tabbed notebook, based on Windows standard RichEdit control. It's always accessible with a single keypress, even if you work in another application. Take a look at the screenshots page.
The basic idea in KeyNote is that you can include many separate notes within a single file. Optionally, KeyNote can encrypt your data securely using the Blowfish or Idea algorithms. Keynote's interface and behavior are extremely configurable. KeyNote was written to overcome major limitations in other popular information managers, both free and shareware. With powerful text formatting capabilities, easily navigable interface and additional features such as styles, macros, plugins, and templates, KeyNote is has become the favorite note keeper, diary, outliner, knowledge base and information manager for thousands of users.
KeyNote is distributed under Mozilla Public License (MPL). A separate website has been established on SourceForge.net to facilitate Open-Source development of KeyNote.
Once again a very simple concept presented as simple as ever. From the same developer who gave us Kookiejar this is a very useful software which can be used for multiple purposes. Use it as a note taker, got to do list manager, bookmark collector, journal and more. It can keep notes in tabs or in a single tab with a tree structure and a combination of both. It can encrypt notes/tabs and keep them safe. It can save all the data in it automatically - anything typed is saved immediately. The uncluttered look gives easy and quick access to your categories, tabs and notes. Occupies very less system memory it is quick and very responsive for such an application. Surprisingly this software is few years old now (without any updates) and still manages to be here!
My wish-list for KeyNote are search for the entire KeyNote and a reminder option. These two features will definitely in many ways complete the package.
Just a reminder that this software is not supported by the developer anymore as he has declared a "hobby programmer bankruptcy". So my wishes and yours might just have to wait for a interested Samaritan to be picked up and added to KeyNote. Nonetheless the software is up to the standards and extremely popular in many circuits. You might have to give it a run yourself to see if it really suits your needs. I have been using this one for the past few months now and I am more than happy to move to anything else for the time being. Excellent, nifty, simple and powerful are the four words I would use to describe KeyNote.
(kntsetup.exe - full install package; about 1.7 MB)
Direct Download Link: kntsetup.exe